Electron momentum spectroscopy of xenon: A detailed analysis

Journal Article · Tue Dec 31 23:00:00 EST 1985 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.33.211· OSTI ID:6076675

Cook, J P.D.; McCarthy, I E; Mitroy, J; Weigold, E

Accurate measurements of the 1000-eV noncoplanar symmetric (e,2e) reaction on xenon are reported. Cross-section calculations are carried out with the use of both the plane-wave and distorted-wave impulse approximations. The distorted-wave impulse approximation accurately describes both the 5p and 5s angular correlations and their relative cross sections. It also describes accurately the 5p/sub 3/2/ :5p/sub 1/2/ branching ratios if Dirac-Fock target wave functions are used. The branching ratios show the inadequacy of Hartree-Fock wave functions for xenon. The plane-wave impulse-approximation overestimates the 5s cross section relative to the 5p and underestimates the cross section at large angles. The 5s spectroscopic factors are assigned up to a separation energy of 45 eV, and the distorted-wave impulse-approximation calculation verifies that all the 5s strength has been found. The spectroscopic factors for the 5s manifold are obtained at 1000 and 1200 eV at a number of angles and are found to be independent of incident energy and ion recoil momentum. The spectroscopic factor for the lowest 5s transition at 23.4 eV is 0.37 +- 0.01, whereas that for the ground-state 5p transition is greater than or equal to 0.98.

• Research Organization: Institute for Atomic Studies, The Flinders University of South Australia, Bedford Park, South Australia 5042, Australia
• OSTI ID: 6076675
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 33:1; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ANGULAR CORRELATION
ATOM COLLISIONS
COLLISIONS
CORRELATIONS
CROSS SECTIONS
ELECTRON COLLISIONS
ELECTRON EMISSION
ELECTRON-ATOM COLLISIONS
ELEMENTS
EMISSION
FLUIDS
GASES
IMPULSE APPROXIMATION
IONIZATION
LINEAR MOMENTUM TRANSFER
MOMENTUM TRANSFER
NONMETALS
RARE GASES
RECOILS
SPECTROSCOPIC FACTORS
XENON